| 摘要 |
The present invention provides an impact energy absorber which permits the efficient absorption of the energy of an external force applied to a vehicle body without an appreciable increase in weight of an automobile. The impact energy absorber is a flexible pipe having a substantially quadrangular cross section and provided with spiral-shaped concavities and convexes about its periphery along its length. The impact energy absorber of the present invention may be made of a composite in which kraft paper is placed on the outside and inside of a metal sheet such as iron foil or hard aluminum foil.
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